16641080

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1$

素因数の和:264

約数の個数: 64

約数和(自身を含む): 39160800

約数和(自身を除く): 22519720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 73, 82, 139, 146, 164, 205, 278, 292, 328, 365, 410, 556, 584, 695, 730, 820, 1112, 1390, 1460, 1640, 2780, 2920, 2993, 5560, 5699, 5986, 10147, 11398, 11972, 14965, 20294, 22796, 23944, 28495, 29930, 40588, 45592, 50735, 56990, 59860, 81176, 101470, 113980, 119720, 202940, 227960, 405880, 416027, 832054, 1664108, 2080135, 3328216, 4160270, 8320540, 16641080]

約数ペア:

[(1, 16641080), (2, 8320540), (4, 4160270), (5, 3328216), (8, 2080135), (10, 1664108), (20, 832054), (40, 416027), (41, 405880), (73, 227960), (82, 202940), (139, 119720), (146, 113980), (164, 101470), (205, 81176), (278, 59860), (292, 56990), (328, 50735), (365, 45592), (410, 40588), (556, 29930), (584, 28495), (695, 23944), (730, 22796), (820, 20294), (1112, 14965), (1390, 11972), (1460, 11398), (1640, 10147), (2780, 5986), (2920, 5699), (2993, 5560)]